Molten metal impeller
US6254340A · kind A · utility
123Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1998 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Apr 8, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/242
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An impeller for a molten metal pump having a cylindrical body comprised of a refractory material. The cylindrical body includes generally coplanar top and bottom surfaces. A central bore is provided in the top surface to provide a point for mating with a shaft. A plurality of circumferentially spaced passages extend from the top or bottom surface to a side wall of the impeller, each of the passages being separate and preferably having an inlet opening which is equal to or less than the corresponding outlet opening in size. A recess being optionally formed in the top or bottom surface, forming the initial inlet to the passages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.